Imaginary Picture of Kepler-478 b

Display orbital revolution of Kepler-478 b around the hoststar Kepler-478
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Exoplanet Name : Kepler-478 b
Alternate Name : "2MASS J19295686+4611463 b, K00165.01, KIC 9527915 b, KOI-165 b, KOI-165.01"
Status : Confirmed
Radius (Rjup / Re): 0.2420 (Rjup) 2.7126 (Rearth)
Mass (Mjup / Me): 0.0210 (Mjup) 6.6736 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1037 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0362
Orbital Period(Observed/Estimated) 13.22 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9070
Star Radiation at Atmospheric Boundary: 53724.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 679.5 (K)
Blackbody T 0.3(K) 638.1 (K)
Blackbody T 0.7(K) 516.3 (K)
Tidally Locked Blackbody T 0.1(K) 808.1 (K)
Tidally Locked Blackbody T 0.3(K) 758.9 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-478
Alternate Name : "2MASS J19295686+4611463, KIC 9527915, KOI-165"
Star Distance(LY) : 1240.8
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.9 (GY)
Temperature : 5211 (K)
Spectral type : K0
UV portion[%]: 5.1
Visible portion[%]: 40.3
IR portion[%]: 54.6
Metalicity : -0.0
Absolute Magnitude: 4.7
Apparent Magnitude: 12.6
Right Ascension(RA) 292.4869
Declination (DEC) 46.1962
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 436 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-478%20b/
Kepler-478 b
Kepler-478 b

  • Kepler-478 b is an exoplanet orbiting the star Kepler-478, located about 1240.8 light-years (380.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-478 has apparent magnitude of 12.6, with absolute magnitude of 4.7.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5211 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-478 b orbits around the star Kepler-478 every 13.2 days with its orbital distance of 0.10 AU ( 15507115.8 km)
  • (Projected orbit of Kepler-478 b around its host star Kepler-478)


  • The Star Kepler-478 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.470 AU ( 70314847.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.650 AU ( 97193494.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.990 AU ( 148101376.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.457 AU ( 217937663.7 km)
  • Radiation at Planetary Boundary of Kepler-478 b : 53724.38 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-478)



  • Kopparapu Recent Venus for Star Kepler-478 distance : 0.503 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-478 distance : 0.637 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-478 distance : 0.615 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-478 distance : 0.675 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-478 distance : 1.145 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-478 distance : 1.208 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-478)



  • Original Kopparapu Recent Venus for Star Kepler-478 distance : 0.499 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-478 distance : 0.656 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-478 distance : 0.660 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-478 distance : 1.165 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-478 distance : 1.211 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-478)



    (Position in Stellar Map of star Kepler-478 and its Exoplanet Kepler-478 b)



    (Zoomed position in Stellar Map of star Kepler-478 and its Exoplanet Kepler-478 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-478*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102